One Piece: Path to Power - Chapter 100: [] A Legend

Zheng Tan somehow returns to the year 2003, turning into a black cat. Picked up from a rubbish heap by the Jiao family, he is given the name “Charcoal”, and so begins the life inside Professor Jiao’s family. Zheng Tan remembers that he was once a person, but currently his body is that of a cat. He has no way of speaking the human language, but can understand it, and even retains the thinking and IQ of a young 20 year old youth. Read along as he adapts to this new world, and somehow tumbles from a group brawl to catching a thief.

- Description from Novelupdates

Mortal cultivation, resurgence.

Time and space shuttle, reversal of reincarnation.
Jinxian Taiyi, Da Luo Daozu.
Three thousand avenues, the law of supreme.

“Faculty of Immortal Immortal” is a fairy tale, a story of Han Lizhen’s fairyland, a legend of a mortal kid who cultivates immortals.

- Description from Ptwxz translation

From Man of Steel to Silver Superman.

Study the symbiosis for Iron Man, and bring back the little Morgan from the zombie universe.

Thanos of the Family Planning Office by hand, the comic version of the old Thanos. Even big-headed doll space watchers have to ask me for help.

As for Infinity Gems Ultron? Can’t survive two chapters of e-waste.

The blackened Clark, the unknown black robe, the Celestial Group, and the Time Management Bureau fought all the way with their fists.

Many years later, Lin Feng held the Cosmic Cube in his left hand and the Fire Seed Source in his right.

What? Why do you say these two things are humanoid?

Hiss… It’s a bit long to say this…

- Description from novelbuddy

This story is centered around the man named Yi Ji-Hyuk, who has spent 1000 years in a Medieval Western fantasy-like world before returning back to the modern-day Earth. When he returns, he finds that his home is facing monster threats, and that humans with superpowers have appeared to protect the innocent people of Earth.